#include<cstdio>
using namespace std;
int main()
{
	int n, m;
	scanf("%d %d", &n, &m);
	int a[n][m], b[n][m];
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < m; j++)
		{
			scanf("%d", &a[i][j]);
		}
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < m; j++)
		{
			scanf("%d", &b[i][j]);
		}
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < m; j++)
		{
			printf("%d ", a[i][j] + b[i][j]);
		}
		printf("\n");
	}
	return 0;
}
